Vibration damping for crack detection in composite laminates

Kyriazoglou, C; Page, B.H Le; Guild, FJ

doi:10.1016/j.compositesa.2004.01.003

Cited by 73 publications

(41 citation statements)

References 10 publications

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“…After testing the method on a CFRP plate-like structure, they propose some improvements on the method: (i) to enhance the correlation between numerical and experimental data, updating techniques should be used; (ii) implementation of a systematic mode selection strategy and the weighting of individual modes based on their sensitivities for damage localization; (iii) optimization of the actuator/sensor placement and evaluation of their influence on the damage identification capability; (iv) evaluation of other aspects, such as temperature effects and influence of the excitation method. Kyriazoglou et al (2004) explore the use of the specific damping capacity (SDC) for damage detection and localization in composite laminates. One important observation is that the resonant frequency allowed detecting cracks in glass fibre-reinforced laminates while for carbon fibre-reinforced laminates no detectable changes in the resonant frequencies could be found.…”

Section: Dampingmentioning

confidence: 99%

A Review of Vibration-based Structural Health Monitoring with Special Emphasis on Composite Materials

Montalvão¹,

Maia²,

Ribeiro³

2006

The Shock and Vibration Digest

427

243

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Structural health monitoring and damage detection techniques are tools of great importance namely in the offshore, civil, mechanical and aeronautical engineering communities, either due to safety reasons or to the economical benefits it may bring. The need for detecting damage in complex structures has led to the development of a vast amount of techniques, in particular those based upon structural vibration analysis. In the present article, some of the latest advances in Structural Health Monitoring and Damage Detection have been covered, with an emphasis on composite structures, given the fact that this kind of materials have currently a wide range of engineering applications.

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Section: Dampingmentioning

confidence: 99%

A Review of Vibration-based Structural Health Monitoring with Special Emphasis on Composite Materials

Montalvão¹,

Maia²,

Ribeiro³

2006

The Shock and Vibration Digest

427

243

View full text Add to dashboard Cite

show abstract

“…Such property is the basis for vibroacoustic diagnostics which allows to detect local faults by measuring global values. Symptoms of damage are sought in variations of, among others: frequency of the natural vibration [28], modal shape [914], damping coecients [15,16], forced vibration amplitudes * e-mail: majkut@agh.edu.pl Observation and analysis of vibroacoustic processes can be used for detection, localization and quantication of damage in locations which are dicult to access or even inaccessible [32], and with the possibility to detect such damage quickly and at relatively low cost, the vibroacoustic method has become an eective and frequently used nondestructive testing (NDT) technique applied to determine the technical condition of structures.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Analysis of Phase Trajectory as the Information about Technical Condition of the Object

Majkut

2012

Acta Phys. Pol. A

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The paper aims to describe the potential use of phase trajectory for damage detection of structural components. The attractor of the examined trajectory is a static equilibrium point of the element being diagnosed. Two dierent damage indices are proposed to evaluate the severity of damage in the diagnosed component. The rst one refers to distance between a point on a trajectory and the point which is the attractor of the trajectory. The other one relates to linearity of the Poincaré map. Eectiveness of the proposed method was evaluated on: a simple model with two degrees of freedom, data from the nite element method model of a cantilever beam with a crack, and experimental data for a cracked plate. With the proposed method, the damage can be quickly and eectively detected. By comparing the current trajectory with that from the previous diagnostic test, it is possible to establish if the nature of crack is either propagating or stationary.

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“…Thus, it is reasonable to assume that the modal damping factors, which are associated with the dissipated energy, may be used in Structural Health Monitoring (SHM) techniques. In fact, other authors have also suggested damping to be used as a feature in damage detection techniques [10,11,12].…”

Section: Introductionmentioning

confidence: 99%

Experimental Assessment of a Modal-Based Multi-Parameter Method for Locating Damage in Composite Laminates

2011

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The low specific weight of composite materials, along with their excellent mechanical properties, makes them suitable to be widely used in many modern engineering structures.However, composite materials are quite sensitive to impacts: a specific kind of damage, called Barely Visible Impact Damage (BVID), may occur, constituting an unsafe failure of difficult assessment. In the past years several methods have been developed with the aim of assessing this type of damage. In this paper, a vibration-based technique that combines both the natural frequencies and the modal damping factors as damage sensitive features is tested for locating impact damage in carbon fibre reinforced laminates.The method is intended to be used for locating damage in real laminated composite structures that undergo in-service impacts, such as an airplane's fuselage or wings. A minimum of one response coordinate is the strict requirement during each inspection, because it uses the dynamic global parameters of the structure as damage features. This is possible because the method assumes that, at least for BVID, the mode shapes remain practically unchanged.The theory is summarized and the method is tested with experimental examples where damage is introduced at different locations. Additionally, the hypothesis that different damage morphologies on composite materials have different contributions to the damage features is addressed.

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Vibration damping for crack detection in composite laminates

Cited by 73 publications

References 10 publications

A Review of Vibration-based Structural Health Monitoring with Special Emphasis on Composite Materials

A Review of Vibration-based Structural Health Monitoring with Special Emphasis on Composite Materials

Quantitative Analysis of Phase Trajectory as the Information about Technical Condition of the Object

Experimental Assessment of a Modal-Based Multi-Parameter Method for Locating Damage in Composite Laminates

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